Kernel lockup: "fs/btrfs/delayed-inoce.c:1410 btrfs_assert_delayed_root_empty"

DISCUSSION Bernardo Donadio 3 participants 4 messages Dec 1, 2014 – Dec 10, 2014 Btrfs file system

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Bernardo Donadio

author

2014-12-01 21:24 UTC #0 lore raw

Hi,

I'm having fairly frequent kernel lockups caused by btrfs, which I think it might be a serious bug. I'm using linux-3.17.3.200.fc20.x86_64. It freezes the whole system, and spits the error trace in the journal a few seconds later.

Here's the journal log, notice that there are 2 stack traces with little time between them:

Dez 01 19:15:12 darwin.donadio.be kernel: ------------[ cut here ]------------
Dez 01 19:15:12 darwin.donadio.be kernel: WARNING: CPU: 3 PID: 494 at fs/btrfs/delayed-inode.c:1410 btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dez 01 19:15:12 darwin.donadio.be kernel: Modules linked in: ufs hfsplus hfs minix vfat msdos fat jfs xfs libcrc32c reiserfs rfcomm fuse xt_CHECKSUM iptable_mangle tun bridge stp llc ip6table_filter ip6_tables ebtable_nat ebtables cfg80211 bnep usblp btusb bluetooth rfkill uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core snd_usb_audio v4l2_common videodev snd_usbmidi_lib snd_rawmidi media joydev kvm_amd kvm serio_raw k10temp edac_core snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic edac_mce_amd snd_hda_intel snd_hda_controller sp5100_tco snd_hda_codec snd_seq i2c_piix4 snd_hwdep snd_seq_device snd_pcm snd_timer snd soundcore shpchp acpi_cpufreq binfmt_misc nfsd auth_rpcgss nfs_acl lockd sunrpc btrfs xor raid6_pq r8169 mii radeon i2c_algo_bit drm_kms_helper ttm drm
Dez 01 19:15:12 darwin.donadio.be kernel: CPU: 3 PID: 494 Comm: btrfs-transacti Tainted: G W 3.17.3-200.fc20.x86_64 #1
Dez 01 19:15:12 darwin.donadio.be kernel: Hardware name: ECS A890GXM-A/A890GXM-A, BIOS 080015 03/24/2010

Dez 01 19:15:12 darwin.donadio.be kernel:  0000000000000000 00000000314b2122 ffff8802213e3db8 ffffffff81728acc
Dez 01 19:15:12 darwin.donadio.be kernel:  0000000000000000 ffff8802213e3df0 ffffffff81094e6d ffff8801e6d78000
Dez 01 19:15:12 darwin.donadio.be kernel:  ffff88022101e800 ffff8802097d9f00 0000000000000000 0000000000000000
Dez 01 19:15:12 darwin.donadio.be kernel: Call Trace:
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffff81728acc>] dump_stack+0x45/0x56
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffff81094e6d>] warn_slowpath_common+0x7d/0xa0
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffff81094f9a>] warn_slowpath_null+0x1a/0x20
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffffa02cc674>] btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffffa02771b2>] btrfs_commit_transaction+0x3a2/0x9c0 [btrfs]
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffffa0272c45>] transaction_kthread+0x1c5/0x250 [btrfs]
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffffa0272a80>] ? btrfs_cleanup_transaction+0x550/0x550 [btrfs]
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffff810b2498>] kthread+0xd8/0xf0
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffff810b23c0>] ? kthread_create_on_node+0x190/0x190
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffff817300fc>] ret_from_fork+0x7c/0xb0
Dez 01 19:15:12 darwin.donadio.be kernel:  [<ffffffff810b23c0>] ? kthread_create_on_node+0x190/0x190

Dez 01 19:15:12 darwin.donadio.be kernel: ---[ end trace 81e909e70c8984e0 ]---
Dez 01 19:15:42 darwin.donadio.be kernel: ------------[ cut here ]------------
Dez 01 19:15:42 darwin.donadio.be kernel: WARNING: CPU: 2 PID: 494 at fs/btrfs/delayed-inode.c:1410 btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dez 01 19:15:42 darwin.donadio.be kernel: Modules linked in: ufs hfsplus hfs minix vfat msdos fat jfs xfs libcrc32c reiserfs rfcomm fuse xt_CHECKSUM iptable_mangle tun bridge stp llc ip6table_filter ip6_tables ebtable_nat ebtables cfg80211 bnep usblp btusb bluetooth rfkill uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core snd_usb_audio v4l2_common videodev snd_usbmidi_lib snd_rawmidi media joydev kvm_amd kvm serio_raw k10temp edac_core snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic edac_mce_amd snd_hda_intel snd_hda_controller sp5100_tco snd_hda_codec snd_seq i2c_piix4 snd_hwdep snd_seq_device snd_pcm snd_timer snd soundcore shpchp acpi_cpufreq binfmt_misc nfsd auth_rpcgss nfs_acl lockd sunrpc btrfs xor raid6_pq r8169 mii radeon i2c_algo_bit drm_kms_helper ttm drm
Dez 01 19:15:42 darwin.donadio.be kernel: CPU: 2 PID: 494 Comm: btrfs-transacti Tainted: G W 3.17.3-200.fc20.x86_64 #1
Dez 01 19:15:42 darwin.donadio.be kernel: Hardware name: ECS A890GXM-A/A890GXM-A, BIOS 080015 03/24/2010

Dez 01 19:15:42 darwin.donadio.be kernel:  0000000000000000 00000000314b2122 ffff8802213e3db8 ffffffff81728acc
Dez 01 19:15:42 darwin.donadio.be kernel:  0000000000000000 ffff8802213e3df0 ffffffff81094e6d ffff8801eb8fc140
Dez 01 19:15:42 darwin.donadio.be kernel:  ffff88022101e800 ffff88009da84b40 0000000000000000 0000000000000000
Dez 01 19:15:42 darwin.donadio.be kernel: Call Trace:
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffff81728acc>] dump_stack+0x45/0x56
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffff81094e6d>] warn_slowpath_common+0x7d/0xa0
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffff81094f9a>] warn_slowpath_null+0x1a/0x20
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffffa02cc674>] btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffffa02771b2>] btrfs_commit_transaction+0x3a2/0x9c0 [btrfs]
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffffa0272c45>] transaction_kthread+0x1c5/0x250 [btrfs]
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffffa0272a80>] ? btrfs_cleanup_transaction+0x550/0x550 [btrfs]
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffff810b2498>] kthread+0xd8/0xf0
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffff810b23c0>] ? kthread_create_on_node+0x190/0x190
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffff817300fc>] ret_from_fork+0x7c/0xb0
Dez 01 19:15:42 darwin.donadio.be kernel:  [<ffffffff810b23c0>] ? kthread_create_on_node+0x190/0x190

Dez 01 19:15:42 darwin.donadio.be kernel: ---[ end trace 81e909e70c8984e1 ]---

--
Bernardo Donadio

Andrew Wade

2014-12-07 02:46 UTC #1 lore raw

I've had repeated lockups as well; I can trigger them by attempting to copy files off of a damaged DVD.

I saw the btrfs_assert_delayed_root_empty warning as well, but not during the lockup; instead I saw it on a boot after a lockup.

During the lockup I sometimes get a different message:

Dec  6 19:41:11 pluto kernel: [347280.104032] INFO: task init:1228
blocked for more than 120 seconds.
Dec  6 19:41:11 pluto kernel: [347280.104038]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:41:11 pluto kernel: [347280.104039] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:41:11 pluto kernel: [347280.104041] init            D
ffff88011fc13640     0  1228   1215 0x00000000
Dec  6 19:41:11 pluto kernel: [347280.104045]  ffff8800d82bbb88
0000000000000082 ffff8800361b1900 ffff8800d82bbfd8
Dec  6 19:41:11 pluto kernel: [347280.104048]  0000000000013640
0000000000013640 ffff8800b8f58000 ffff8800361b1900
Dec  6 19:41:11 pluto kernel: [347280.104050]  ffff8800d82bbc30
ffff88011fc13f40 ffff8800d82bbc30 ffff88011ffdd3e8
Dec  6 19:41:11 pluto kernel: [347280.104053] Call Trace:
Dec  6 19:41:11 pluto kernel: [347280.104061]  [<ffffffff817694b0>] ?
bit_wait+0x50/0x50
Dec  6 19:41:11 pluto kernel: [347280.104064]  [<ffffffff81768c91>]
io_schedule+0xa1/0x140
Dec  6 19:41:11 pluto kernel: [347280.104067]  [<ffffffff817694dc>]
bit_wait_io+0x2c/0x50
Dec  6 19:41:11 pluto kernel: [347280.104069]  [<ffffffff81769115>]
__wait_on_bit+0x65/0x90
Dec  6 19:41:11 pluto kernel: [347280.104073]  [<ffffffff813880c3>] ?
radix_tree_lookup_slot+0x13/0x30
Dec  6 19:41:11 pluto kernel: [347280.104077]  [<ffffffff811671b7>]
wait_on_page_bit+0xc7/0xd0
Dec  6 19:41:11 pluto kernel: [347280.104081]  [<ffffffff810ae5c0>] ?
autoremove_wake_function+0x40/0x40
Dec  6 19:41:11 pluto kernel: [347280.104109]  [<ffffffffa0260edc>]
prepare_pages.isra.19+0xac/0x1a0 [btrfs]
Dec  6 19:41:12 pluto kernel: [347280.104122]  [<ffffffffa0261acc>]
__btrfs_buffered_write+0x1cc/0x590 [btrfs]
Dec  6 19:41:12 pluto kernel: [347280.104126]  [<ffffffff8109a832>] ?
default_wake_function+0x12/0x20
Dec  6 19:41:12 pluto kernel: [347280.104128]  [<ffffffff810ae0c8>] ?
__wake_up+0x48/0x60
Dec  6 19:41:12 pluto kernel: [347280.104142]  [<ffffffffa0262117>]
btrfs_file_write_iter+0x287/0x4e0 [btrfs]
Dec  6 19:41:12 pluto kernel: [347280.104146]  [<ffffffff811dc591>]
new_sync_write+0x81/0xb0
Dec  6 19:41:12 pluto kernel: [347280.104148]  [<ffffffff811dceb7>]
vfs_write+0xb7/0x1f0
Dec  6 19:41:12 pluto kernel: [347280.104151]  [<ffffffff811dd936>]
SyS_write+0x46/0xb0
Dec  6 19:41:12 pluto kernel: [347280.104154]  [<ffffffff8176d06d>]
system_call_fastpath+0x16/0x1b
Dec  6 19:43:11 pluto kernel: [347400.104029] INFO: task khugepaged:27
blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104036]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104037] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104039] khugepaged      D
ffff88011fc93640     0    27      2 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104043]  ffff88011957bcd0
0000000000000046 ffff880119570000 ffff88011957bfd8
Dec  6 19:43:11 pluto kernel: [347400.104046]  0000000000013640
0000000000013640 ffff880119696400 ffff880119570000
Dec  6 19:43:11 pluto kernel: [347400.104049]  ffff880119420000
ffff880119570000 ffff88008f0166e0 ffff88008f0166f8
Dec  6 19:43:11 pluto kernel: [347400.104051] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104060]  [<ffffffff81768989>]
schedule+0x29/0x70
Dec  6 19:43:11 pluto kernel: [347400.104063]  [<ffffffff8176b705>]
rwsem_down_read_failed+0xe5/0x140
Dec  6 19:43:11 pluto kernel: [347400.104067]  [<ffffffff810d4c52>] ?
del_timer_sync+0x52/0x60
Dec  6 19:43:11 pluto kernel: [347400.104071]  [<ffffffff81390384>]
call_rwsem_down_read_failed+0x14/0x30
Dec  6 19:43:11 pluto kernel: [347400.104073]  [<ffffffff8176ad84>] ?
down_read+0x24/0x30
Dec  6 19:43:11 pluto kernel: [347400.104077]  [<ffffffff811c7b20>]
khugepaged+0x2e0/0x1220
Dec  6 19:43:11 pluto kernel: [347400.104081]  [<ffffffff810ae580>] ?
prepare_to_wait_event+0x110/0x110
Dec  6 19:43:11 pluto kernel: [347400.104083]  [<ffffffff811c7840>] ?
maybe_pmd_mkwrite+0x30/0x30
Dec  6 19:43:11 pluto kernel: [347400.104086]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 19:43:11 pluto kernel: [347400.104089]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 19:43:11 pluto kernel: [347400.104091]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 19:43:11 pluto kernel: [347400.104094]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 19:43:11 pluto kernel: [347400.104103] INFO: task
btrfs-transacti:665 blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104105]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104106] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104107] btrfs-transacti D
ffff88011fc93640     0   665      2 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104110]  ffff8800d6183988
0000000000000046 ffff880035fc3200 ffff8800d6183fd8
Dec  6 19:43:11 pluto kernel: [347400.104112]  0000000000013640
0000000000013640 ffff8800b8f58000 ffff880035fc3200
Dec  6 19:43:11 pluto kernel: [347400.104114]  ffff8800d6183a30
ffff88011fc93f40 ffff8800d6183a30 ffff88011ffd67e8
Dec  6 19:43:11 pluto kernel: [347400.104117] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104120]  [<ffffffff817694b0>] ?
bit_wait+0x50/0x50
Dec  6 19:43:11 pluto kernel: [347400.104122]  [<ffffffff81768c91>]
io_schedule+0xa1/0x140
Dec  6 19:43:11 pluto kernel: [347400.104124]  [<ffffffff817694dc>]
bit_wait_io+0x2c/0x50
Dec  6 19:43:11 pluto kernel: [347400.104127]  [<ffffffff81769115>]
__wait_on_bit+0x65/0x90
Dec  6 19:43:11 pluto kernel: [347400.104130]  [<ffffffff811671b7>]
wait_on_page_bit+0xc7/0xd0
Dec  6 19:43:11 pluto kernel: [347400.104133]  [<ffffffff810ae5c0>] ?
autoremove_wake_function+0x40/0x40
Dec  6 19:43:11 pluto kernel: [347400.104162]  [<ffffffffa027254a>]
read_extent_buffer_pages+0x2ca/0x300 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104173]  [<ffffffffa0245f60>] ?
free_root_pointers+0x60/0x60 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104185]  [<ffffffffa02471a3>]
btree_read_extent_buffer_pages.constprop.50+0xb3/0x120 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104197]  [<ffffffffa0248340>]
read_tree_block+0x40/0x70 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104206]  [<ffffffffa022906c>]
read_block_for_search.isra.33+0x12c/0x370 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104216]  [<ffffffffa022b33a>]
btrfs_search_slot+0x3ca/0xa20 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104227]  [<ffffffffa0246c2e>] ?
btree_set_page_dirty+0xe/0x10 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104238]  [<ffffffffa023eb87>]
btrfs_write_dirty_block_groups+0xe7/0x6d0 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104251]  [<ffffffffa02c3464>]
commit_cowonly_roots+0x17b/0x230 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104263]  [<ffffffffa024f602>]
btrfs_commit_transaction+0x432/0xa90 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104276]  [<ffffffffa024fcf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104288]  [<ffffffffa024b0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104299]  [<ffffffffa024af00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104302]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 19:43:11 pluto kernel: [347400.104304]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 19:43:11 pluto kernel: [347400.104307]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 19:43:11 pluto kernel: [347400.104309]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 19:43:11 pluto kernel: [347400.104317] INFO: task init:1228
blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104319]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104320] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104321] init            D
ffff88011fc13640     0  1228   1215 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104324]  ffff8800d82bbb88
0000000000000082 ffff8800361b1900 ffff8800d82bbfd8
Dec  6 19:43:11 pluto kernel: [347400.104326]  0000000000013640
0000000000013640 ffff8800b8f58000 ffff8800361b1900
Dec  6 19:43:11 pluto kernel: [347400.104329]  ffff8800d82bbc30
ffff88011fc13f40 ffff8800d82bbc30 ffff88011ffdd3e8
Dec  6 19:43:11 pluto kernel: [347400.104331] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104334]  [<ffffffff817694b0>] ?
bit_wait+0x50/0x50
Dec  6 19:43:11 pluto kernel: [347400.104336]  [<ffffffff81768c91>]
io_schedule+0xa1/0x140
Dec  6 19:43:11 pluto kernel: [347400.104338]  [<ffffffff817694dc>]
bit_wait_io+0x2c/0x50
Dec  6 19:43:11 pluto kernel: [347400.104341]  [<ffffffff81769115>]
__wait_on_bit+0x65/0x90
Dec  6 19:43:11 pluto kernel: [347400.104343]  [<ffffffff813880c3>] ?
radix_tree_lookup_slot+0x13/0x30
Dec  6 19:43:11 pluto kernel: [347400.104346]  [<ffffffff811671b7>]
wait_on_page_bit+0xc7/0xd0
Dec  6 19:43:11 pluto kernel: [347400.104349]  [<ffffffff810ae5c0>] ?
autoremove_wake_function+0x40/0x40
Dec  6 19:43:11 pluto kernel: [347400.104362]  [<ffffffffa0260edc>]
prepare_pages.isra.19+0xac/0x1a0 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104375]  [<ffffffffa0261acc>]
__btrfs_buffered_write+0x1cc/0x590 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104378]  [<ffffffff8109a832>] ?
default_wake_function+0x12/0x20
Dec  6 19:43:11 pluto kernel: [347400.104381]  [<ffffffff810ae0c8>] ?
__wake_up+0x48/0x60
Dec  6 19:43:11 pluto kernel: [347400.104394]  [<ffffffffa0262117>]
btrfs_file_write_iter+0x287/0x4e0 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104398]  [<ffffffff811dc591>]
new_sync_write+0x81/0xb0
Dec  6 19:43:11 pluto kernel: [347400.104401]  [<ffffffff811dceb7>]
vfs_write+0xb7/0x1f0
Dec  6 19:43:11 pluto kernel: [347400.104403]  [<ffffffff811dd936>]
SyS_write+0x46/0xb0
Dec  6 19:43:11 pluto kernel: [347400.104406]  [<ffffffff8176d06d>]
system_call_fastpath+0x16/0x1b
Dec  6 19:43:11 pluto kernel: [347400.104438] INFO: task firefox:3605
blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104440]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104441] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104442] firefox         D
ffff88011fc93640     0  3605   1664 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104445]  ffff8800226dbd30
0000000000000082 ffff88006e070000 ffff8800226dbfd8
Dec  6 19:43:11 pluto kernel: [347400.104447]  0000000000013640
0000000000013640 ffff880119b8b200 ffff88006e070000
Dec  6 19:43:11 pluto kernel: [347400.104450]  0000000000000000
ffff88006e070000 ffff88008f0166e0 ffff88008f0166f8
Dec  6 19:43:11 pluto kernel: [347400.104452] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104455]  [<ffffffff81768989>]
schedule+0x29/0x70
Dec  6 19:43:11 pluto kernel: [347400.104457]  [<ffffffff8176b705>]
rwsem_down_read_failed+0xe5/0x140
Dec  6 19:43:11 pluto kernel: [347400.104461]  [<ffffffff811f7cb0>] ?
touch_atime+0x110/0x140
Dec  6 19:43:11 pluto kernel: [347400.104464]  [<ffffffff81390384>]
call_rwsem_down_read_failed+0x14/0x30
Dec  6 19:43:11 pluto kernel: [347400.104466]  [<ffffffff8176ad84>] ?
down_read+0x24/0x30
Dec  6 19:43:11 pluto kernel: [347400.104470]  [<ffffffff8105d221>]
__do_page_fault+0x1f1/0x550
Dec  6 19:43:11 pluto kernel: [347400.104472]  [<ffffffff8109f248>] ?
__enqueue_entity+0x78/0x80
Dec  6 19:43:11 pluto kernel: [347400.104475]  [<ffffffff810a104d>] ?
set_next_entity+0x9d/0xb0
Dec  6 19:43:11 pluto kernel: [347400.104477]  [<ffffffff810a8e4b>] ?
pick_next_task_fair+0x61b/0x880
Dec  6 19:43:11 pluto kernel: [347400.104481]  [<ffffffff81011625>] ?
__switch_to+0x165/0x590
Dec  6 19:43:11 pluto kernel: [347400.104484]  [<ffffffff8105d5b1>]
do_page_fault+0x31/0x70
Dec  6 19:43:11 pluto kernel: [347400.104486]  [<ffffffff8176f068>]
page_fault+0x28/0x30
Dec  6 19:43:11 pluto kernel: [347400.104489] INFO: task Socket
Thread:3610 blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104490]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104491] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104492] Socket Thread   D
ffff88011fc93640     0  3610   1664 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104495]  ffff880100bafd30
0000000000000082 ffff88006e1c1900 ffff880100baffd8
Dec  6 19:43:11 pluto kernel: [347400.104497]  0000000000013640
0000000000013640 ffff880119b8b200 ffff88006e1c1900
Dec  6 19:43:11 pluto kernel: [347400.104500]  000000000000058a
ffff88006e1c1900 ffff88008f0166e0 ffff88008f0166f8
Dec  6 19:43:11 pluto kernel: [347400.104502] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104505]  [<ffffffff81768989>]
schedule+0x29/0x70
Dec  6 19:43:11 pluto kernel: [347400.104507]  [<ffffffff8176b705>]
rwsem_down_read_failed+0xe5/0x140
Dec  6 19:43:11 pluto kernel: [347400.104510]  [<ffffffff81390384>]
call_rwsem_down_read_failed+0x14/0x30
Dec  6 19:43:11 pluto kernel: [347400.104513]  [<ffffffff8176ad84>] ?
down_read+0x24/0x30
Dec  6 19:43:11 pluto kernel: [347400.104515]  [<ffffffff8105d221>]
__do_page_fault+0x1f1/0x550
Dec  6 19:43:11 pluto kernel: [347400.104518]  [<ffffffff811f3993>] ?
__dentry_kill+0x173/0x210
Dec  6 19:43:11 pluto kernel: [347400.104520]  [<ffffffff811f3ad5>] ?
dput+0xa5/0x180
Dec  6 19:43:11 pluto kernel: [347400.104523]  [<ffffffff811fcc34>] ?
mntput+0x24/0x40
Dec  6 19:43:11 pluto kernel: [347400.104525]  [<ffffffff811de900>] ?
__fput+0x190/0x220
Dec  6 19:43:11 pluto kernel: [347400.104528]  [<ffffffff8105d5b1>]
do_page_fault+0x31/0x70
Dec  6 19:43:11 pluto kernel: [347400.104530]  [<ffffffff8176f068>]
page_fault+0x28/0x30
Dec  6 19:43:11 pluto kernel: [347400.104533] INFO: task JS
Watchdog:3617 blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104535]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104536] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104537] JS Watchdog     D
ffff88011fc93640     0  3617   1664 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104540]  ffff880006193e18
0000000000000082 ffff880119573200 ffff880006193fd8
Dec  6 19:43:11 pluto kernel: [347400.104542]  0000000000013640
0000000000013640 ffff8800b8f58000 ffff880119573200
Dec  6 19:43:11 pluto kernel: [347400.104544]  00003ffffffff000
ffff880119573200 ffff88008f0166f8 ffff88008f0166e0
Dec  6 19:43:11 pluto kernel: [347400.104547] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104549]  [<ffffffff81768989>]
schedule+0x29/0x70
Dec  6 19:43:11 pluto kernel: [347400.104552]  [<ffffffff8176b48d>]
rwsem_down_write_failed+0x1dd/0x370
Dec  6 19:43:11 pluto kernel: [347400.104555]  [<ffffffff810b655d>] ?
__rwsem_do_wake+0xed/0x170
Dec  6 19:43:11 pluto kernel: [347400.104558]  [<ffffffff813903b3>]
call_rwsem_down_write_failed+0x13/0x20
Dec  6 19:43:11 pluto kernel: [347400.104560]  [<ffffffff8176adc1>] ?
down_write+0x31/0x50
Dec  6 19:43:11 pluto kernel: [347400.104564]  [<ffffffff8119e5c1>]
SyS_mprotect+0xc1/0x270
Dec  6 19:43:11 pluto kernel: [347400.104567]  [<ffffffff8176d06d>]
system_call_fastpath+0x16/0x1b
Dec  6 19:43:11 pluto kernel: [347400.104569] INFO: task Cache2
I/O:3623 blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104571]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104572] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104573] Cache2 I/O      D
ffff88011fc93640     0  3623   1664 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104576]  ffff8800061cbb38
0000000000000082 ffff8800aa620000 ffff8800061cbfd8
Dec  6 19:43:11 pluto kernel: [347400.104578]  0000000000013640
0000000000013640 ffff880119b8b200 ffff8800aa620000
Dec  6 19:43:11 pluto kernel: [347400.104581]  ffff8800061cbb48
ffff8800c7cfdb40 ffff8800daf0c1f0 ffff8800daf0c1f0
Dec  6 19:43:11 pluto kernel: [347400.104583] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104586]  [<ffffffff81768989>]
schedule+0x29/0x70
Dec  6 19:43:11 pluto kernel: [347400.104598]  [<ffffffffa024e7cf>]
wait_current_trans.isra.20+0x9f/0x100 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104601]  [<ffffffff810ae580>] ?
prepare_to_wait_event+0x110/0x110
Dec  6 19:43:11 pluto kernel: [347400.104613]  [<ffffffffa024ffdf>]
start_transaction+0x37f/0x590 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104625]  [<ffffffffa025020b>]
btrfs_start_transaction+0x1b/0x20 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104638]  [<ffffffffa025de7b>]
btrfs_create+0x3b/0x210 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104642]  [<ffffffff812f67fc>] ?
security_inode_permission+0x1c/0x30
Dec  6 19:43:11 pluto kernel: [347400.104644]  [<ffffffff811e89b5>]
vfs_create+0xd5/0x140
Dec  6 19:43:11 pluto kernel: [347400.104646]  [<ffffffff811ec153>]
do_last+0x1013/0x1210
Dec  6 19:43:11 pluto kernel: [347400.104649]  [<ffffffff811e73f8>] ?
inode_permission+0x18/0x50
Dec  6 19:43:11 pluto kernel: [347400.104651]  [<ffffffff811e9969>] ?
link_path_walk+0x69/0x820
Dec  6 19:43:11 pluto kernel: [347400.104655]  [<ffffffff81332200>] ?
apparmor_ptrace_access_check+0x20/0x40
Dec  6 19:43:11 pluto kernel: [347400.104657]  [<ffffffff812f6b46>] ?
security_file_alloc+0x16/0x20
Dec  6 19:43:11 pluto kernel: [347400.104659]  [<ffffffff811ec404>]
path_openat+0xb4/0x640
Dec  6 19:43:11 pluto kernel: [347400.104662]  [<ffffffff810a3bc4>] ?
update_curr+0xe4/0x180
Dec  6 19:43:11 pluto kernel: [347400.104664]  [<ffffffff810ade68>] ?
__wake_up_common+0x58/0x90
Dec  6 19:43:11 pluto kernel: [347400.104667]  [<ffffffff811edb2a>]
do_filp_open+0x3a/0x90
Dec  6 19:43:11 pluto kernel: [347400.104669]  [<ffffffff811fa8d7>] ?
__alloc_fd+0xa7/0x130
Dec  6 19:43:11 pluto kernel: [347400.104672]  [<ffffffff811dbeb8>]
do_sys_open+0x128/0x220
Dec  6 19:43:11 pluto kernel: [347400.104675]  [<ffffffff811dbfce>]
SyS_open+0x1e/0x20
Dec  6 19:43:11 pluto kernel: [347400.104677]  [<ffffffff8176d06d>]
system_call_fastpath+0x16/0x1b
Dec  6 19:43:11 pluto kernel: [347400.104680] INFO: task mozStorage
#1:3637 blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104682]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104683] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104684] mozStorage #1   D
ffff88011fc93640     0  3637   1664 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104686]  ffff880006203a58
0000000000000082 ffff8800361b0000 ffff880006203fd8
Dec  6 19:43:11 pluto kernel: [347400.104689]  0000000000013640
0000000000013640 ffff88006e070000 ffff8800361b0000
Dec  6 19:43:11 pluto kernel: [347400.104691]  ffff880006203a68
ffff8800c7cfdb40 ffff8800daf0c1f0 ffff8800daf0c1f0
Dec  6 19:43:11 pluto kernel: [347400.104694] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104696]  [<ffffffff81768989>]
schedule+0x29/0x70
Dec  6 19:43:11 pluto kernel: [347400.104708]  [<ffffffffa024e7cf>]
wait_current_trans.isra.20+0x9f/0x100 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104711]  [<ffffffff810ae580>] ?
prepare_to_wait_event+0x110/0x110
Dec  6 19:43:11 pluto kernel: [347400.104723]  [<ffffffffa024ff00>]
start_transaction+0x2a0/0x590 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104736]  [<ffffffffa0250247>]
btrfs_join_transaction+0x17/0x20 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104748]  [<ffffffffa0255d98>]
btrfs_dirty_inode+0x48/0xe0 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104758]  [<ffffffffa022f17b>] ?
block_rsv_add_bytes+0x4b/0x60 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104770]  [<ffffffffa0255e94>]
btrfs_update_time+0x64/0xd0 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104773]  [<ffffffff811f7b05>]
update_time+0x25/0xc0
Dec  6 19:43:11 pluto kernel: [347400.104776]  [<ffffffff810d2aa6>] ?
current_fs_time+0x16/0x60
Dec  6 19:43:11 pluto kernel: [347400.104778]  [<ffffffff811f7d60>]
file_update_time+0x80/0xd0
Dec  6 19:43:11 pluto kernel: [347400.104791]  [<ffffffffa025ee6c>]
btrfs_page_mkwrite+0xac/0x310 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104805]  [<ffffffffa026b951>] ?
free_extent_state+0x21/0x30 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104808]  [<ffffffff81191c8d>]
do_page_mkwrite+0x3d/0x70
Dec  6 19:43:11 pluto kernel: [347400.104811]  [<ffffffff81193e27>]
do_wp_page+0x627/0x770
Dec  6 19:43:11 pluto kernel: [347400.104814]  [<ffffffff8119624c>]
handle_mm_fault+0x80c/0x10f0
Dec  6 19:43:11 pluto kernel: [347400.104817]  [<ffffffff8105d1ce>]
__do_page_fault+0x19e/0x550
Dec  6 19:43:11 pluto kernel: [347400.104819]  [<ffffffff811df375>] ?
__sb_end_write+0x35/0x70
Dec  6 19:43:11 pluto kernel: [347400.104822]  [<ffffffff811dcf72>] ?
vfs_write+0x172/0x1f0
Dec  6 19:43:11 pluto kernel: [347400.104824]  [<ffffffff8105d5b1>]
do_page_fault+0x31/0x70
Dec  6 19:43:11 pluto kernel: [347400.104827]  [<ffffffff8176f068>]
page_fault+0x28/0x30
Dec  6 19:43:11 pluto kernel: [347400.104831] INFO: task mozStorage
#9:3683 blocked for more than 120 seconds.
Dec  6 19:43:11 pluto kernel: [347400.104832]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:43:11 pluto kernel: [347400.104833] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:43:11 pluto kernel: [347400.104834] mozStorage #9   D
ffff88011fc93640     0  3683   1664 0x00000000
Dec  6 19:43:11 pluto kernel: [347400.104837]  ffff88008b877b38
0000000000000082 ffff8800dae8cb00 ffff88008b877fd8
Dec  6 19:43:11 pluto kernel: [347400.104839]  0000000000013640
0000000000013640 ffff88006e070000 ffff8800dae8cb00
Dec  6 19:43:11 pluto kernel: [347400.104842]  ffff88008b877b48
ffff8800c7cfdb40 ffff8800daf0c1f0 ffff8800daf0c1f0
Dec  6 19:43:11 pluto kernel: [347400.104844] Call Trace:
Dec  6 19:43:11 pluto kernel: [347400.104847]  [<ffffffff81768989>]
schedule+0x29/0x70
Dec  6 19:43:11 pluto kernel: [347400.104859]  [<ffffffffa024e7cf>]
wait_current_trans.isra.20+0x9f/0x100 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104862]  [<ffffffff810ae580>] ?
prepare_to_wait_event+0x110/0x110
Dec  6 19:43:11 pluto kernel: [347400.104874]  [<ffffffffa024ffdf>]
start_transaction+0x37f/0x590 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104886]  [<ffffffffa025020b>]
btrfs_start_transaction+0x1b/0x20 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104899]  [<ffffffffa025de7b>]
btrfs_create+0x3b/0x210 [btrfs]
Dec  6 19:43:11 pluto kernel: [347400.104901]  [<ffffffff812f67fc>] ?
security_inode_permission+0x1c/0x30
Dec  6 19:43:11 pluto kernel: [347400.104903]  [<ffffffff811e89b5>]
vfs_create+0xd5/0x140
Dec  6 19:43:11 pluto kernel: [347400.104906]  [<ffffffff811ec153>]
do_last+0x1013/0x1210
Dec  6 19:43:11 pluto kernel: [347400.104908]  [<ffffffff811e73f8>] ?
inode_permission+0x18/0x50
Dec  6 19:43:11 pluto kernel: [347400.104910]  [<ffffffff811e9969>] ?
link_path_walk+0x69/0x820
Dec  6 19:43:11 pluto kernel: [347400.104913]  [<ffffffff81332200>] ?
apparmor_ptrace_access_check+0x20/0x40
Dec  6 19:43:11 pluto kernel: [347400.104915]  [<ffffffff812f6b46>] ?
security_file_alloc+0x16/0x20
Dec  6 19:43:11 pluto kernel: [347400.104917]  [<ffffffff811ec404>]
path_openat+0xb4/0x640
Dec  6 19:43:11 pluto kernel: [347400.104919]  [<ffffffff811ecc59>] ?
putname+0x29/0x40
Dec  6 19:43:11 pluto kernel: [347400.104921]  [<ffffffff811eda2f>] ?
user_path_at_empty+0x5f/0xa0
Dec  6 19:43:11 pluto kernel: [347400.104924]  [<ffffffff811edb2a>]
do_filp_open+0x3a/0x90
Dec  6 19:43:11 pluto kernel: [347400.104926]  [<ffffffff811fa8d7>] ?
__alloc_fd+0xa7/0x130
Dec  6 19:43:11 pluto kernel: [347400.104929]  [<ffffffff811dbeb8>]
do_sys_open+0x128/0x220
Dec  6 19:43:11 pluto kernel: [347400.104932]  [<ffffffff811dbfce>]
SyS_open+0x1e/0x20
Dec  6 19:43:11 pluto kernel: [347400.104934]  [<ffffffff8176d06d>]

system_call_fastpath+0x16/0x1b

After a couple of hard resets I got the errors below. In the session with the errors below I was able to shutdown cleanly:

Dec  6 20:43:26 pluto kernel: [   77.297712] ------------[ cut here
]------------
Dec  6 20:43:26 pluto kernel: [   77.297747] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:43:26 pluto kernel: [   77.297749] Modules linked in:

bnep(E) rfcomm(E) bluetooth(E) snd_hda_codec_via(E) joydev(E) snd_hda_codec_generic(E) snd_hda_intel(E) snd_hda_controller(E) snd_hda_codec(E) snd_hwdep(E) snd_pcm(E) snd_seq_midi(E) snd_seq_midi_event(E) snd_rawmidi(E) snd_seq(E) snd_seq_device(E) snd_timer(E) snd(E) soundcore(E) coretemp(E) lpc_ich(E) serio_raw(E) asus_atk0110(E) mac_hid(E) parport_pc(E) ppdev(E) lp(E) parport(E) btrfs(E) xor(E) raid6_pq(E) hid_generic(E) usbhid(E) hid(E) psmouse(E) atl1e(E) i915(E) video(E) i2c_algo_bit(E) drm_kms_helper(E) drm(E)

Dec  6 20:43:26 pluto kernel: [   77.297775] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:43:26 pluto kernel: [   77.297777] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:43:26 pluto kernel: [   77.297779]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:43:26 pluto kernel: [   77.297781]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800d9c0c0b8
Dec  6 20:43:26 pluto kernel: [   77.297784]  ffff8800d9e93780
ffff8800d8ec4800 ffff8800d9c0c000 ffff8800da8fc1a0
Dec  6 20:43:26 pluto kernel: [   77.297786] Call Trace:
Dec  6 20:43:26 pluto kernel: [   77.297793]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:43:26 pluto kernel: [   77.297797]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:43:26 pluto kernel: [   77.297800]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:43:26 pluto kernel: [   77.297814]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:43:26 pluto kernel: [   77.297826]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:43:26 pluto kernel: [   77.297839]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:43:26 pluto kernel: [   77.297851]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:43:26 pluto kernel: [   77.297863]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:43:26 pluto kernel: [   77.297866]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:43:26 pluto kernel: [   77.297868]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:43:26 pluto kernel: [   77.297872]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:43:26 pluto kernel: [   77.297874]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:43:26 pluto kernel: [   77.297876] ---[ end trace
f2fbb6fd3e4e0d99 ]---
Dec  6 20:43:49 pluto kernel: [  100.439860] UDF-fs: INFO Mounting
volume 'Stuff for Mugg', timestamp 2006/09/17 18:21 (1ed4)
Dec  6 20:43:58 pluto kernel: [  109.922161] ------------[ cut here
]------------
Dec  6 20:43:58 pluto kernel: [  109.922198] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:43:58 pluto kernel: [  109.922200] Modules linked in:

nls_utf8(E) udf(E) crc_itu_t(E) bnep(E) rfcomm(E) bluetooth(E) snd_hda_codec_via(E) joydev(E) snd_hda_codec_generic(E) snd_hda_intel(E) snd_hda_controller(E) snd_hda_codec(E) snd_hwdep(E) snd_pcm(E) snd_seq_midi(E) snd_seq_midi_event(E) snd_rawmidi(E) snd_seq(E) snd_seq_device(E) snd_timer(E) snd(E) soundcore(E) coretemp(E) lpc_ich(E) serio_raw(E) asus_atk0110(E) mac_hid(E) parport_pc(E) ppdev(E) lp(E) parport(E) btrfs(E) xor(E) raid6_pq(E) hid_generic(E) usbhid(E) hid(E) psmouse(E) atl1e(E) i915(E) video(E) i2c_algo_bit(E) drm_kms_helper(E) drm(E)

Dec  6 20:43:58 pluto kernel: [  109.922228] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:43:58 pluto kernel: [  109.922229] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:43:58 pluto kernel: [  109.922231]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:43:58 pluto kernel: [  109.922233]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800b5e4c0b8
Dec  6 20:43:58 pluto kernel: [  109.922236]  ffff8800d5b4d1e0
ffff8800d8ec4800 ffff8800b5e4c000 ffff8800da8fc1a0
Dec  6 20:43:58 pluto kernel: [  109.922239] Call Trace:
Dec  6 20:43:58 pluto kernel: [  109.922246]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:43:58 pluto kernel: [  109.922250]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:43:58 pluto kernel: [  109.922253]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:43:58 pluto kernel: [  109.922267]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:43:58 pluto kernel: [  109.922279]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:43:58 pluto kernel: [  109.922292]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:43:58 pluto kernel: [  109.922304]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:43:58 pluto kernel: [  109.922316]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:43:58 pluto kernel: [  109.922319]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:43:58 pluto kernel: [  109.922321]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:43:58 pluto kernel: [  109.922325]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:43:58 pluto kernel: [  109.922328]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:43:58 pluto kernel: [  109.922329] ---[ end trace
f2fbb6fd3e4e0d9a ]---
Dec  6 20:44:35 pluto kernel: [  146.375065] ------------[ cut here
]------------
Dec  6 20:44:35 pluto kernel: [  146.375101] WARNING: CPU: 0 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:44:35 pluto kernel: [  146.375102] Modules linked in:

Dec  6 20:44:35 pluto kernel: [  146.375130] CPU: 0 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:44:35 pluto kernel: [  146.375132] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:44:35 pluto kernel: [  146.375133]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:44:35 pluto kernel: [  146.375136]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800d9c0c0b8
Dec  6 20:44:35 pluto kernel: [  146.375138]  ffff8800d9c31be0
ffff8800d8ec4800 ffff8800d9c0c000 ffff8800da8fc1a0
Dec  6 20:44:35 pluto kernel: [  146.375141] Call Trace:
Dec  6 20:44:35 pluto kernel: [  146.375147]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:44:35 pluto kernel: [  146.375152]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:44:35 pluto kernel: [  146.375154]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:44:35 pluto kernel: [  146.375168]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:44:35 pluto kernel: [  146.375181]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:44:35 pluto kernel: [  146.375193]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:44:35 pluto kernel: [  146.375205]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:44:35 pluto kernel: [  146.375217]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:44:35 pluto kernel: [  146.375220]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:44:35 pluto kernel: [  146.375223]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:44:35 pluto kernel: [  146.375226]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:44:35 pluto kernel: [  146.375228]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:44:35 pluto kernel: [  146.375230] ---[ end trace
f2fbb6fd3e4e0d9b ]---
Dec  6 20:45:16 pluto kernel: [  187.676554] ------------[ cut here
]------------
Dec  6 20:45:16 pluto kernel: [  187.676595] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:45:16 pluto kernel: [  187.676598] Modules linked in:

Dec  6 20:45:16 pluto kernel: [  187.676639] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:45:16 pluto kernel: [  187.676641] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:45:16 pluto kernel: [  187.676643]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:45:16 pluto kernel: [  187.676647]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800b5e4c1a8
Dec  6 20:45:16 pluto kernel: [  187.676651]  ffff88007eb9cdc0
ffff8800d8ec4800 ffff8800b5e4c0f0 ffff8800da8fc1a0
Dec  6 20:45:16 pluto kernel: [  187.676655] Call Trace:
Dec  6 20:45:16 pluto kernel: [  187.676663]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:45:16 pluto kernel: [  187.676669]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:45:16 pluto kernel: [  187.676673]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:45:16 pluto kernel: [  187.676695]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:45:16 pluto kernel: [  187.676714]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:45:16 pluto kernel: [  187.676733]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:45:16 pluto kernel: [  187.676752]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:45:16 pluto kernel: [  187.676771]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:45:16 pluto kernel: [  187.676775]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:45:16 pluto kernel: [  187.676779]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:45:16 pluto kernel: [  187.676784]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:45:16 pluto kernel: [  187.676788]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:45:16 pluto kernel: [  187.676790] ---[ end trace
f2fbb6fd3e4e0d9c ]---
Dec  6 20:45:55 pluto kernel: [  226.634233] ------------[ cut here
]------------
Dec  6 20:45:55 pluto kernel: [  226.634281] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:45:55 pluto kernel: [  226.634284] Modules linked in:

Dec  6 20:45:55 pluto kernel: [  226.634336] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:45:55 pluto kernel: [  226.634340] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:45:55 pluto kernel: [  226.634342]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:45:55 pluto kernel: [  226.634348]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800b5e4c298
Dec  6 20:45:55 pluto kernel: [  226.634353]  ffff88007eb9c460
ffff8800d8ec4800 ffff8800b5e4c1e0 ffff8800da8fc1a0
Dec  6 20:45:55 pluto kernel: [  226.634358] Call Trace:
Dec  6 20:45:55 pluto kernel: [  226.634368]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:45:55 pluto kernel: [  226.634375]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:45:55 pluto kernel: [  226.634380]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:45:55 pluto kernel: [  226.634410]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:45:55 pluto kernel: [  226.634435]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:45:55 pluto kernel: [  226.634461]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:45:55 pluto kernel: [  226.634486]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:45:55 pluto kernel: [  226.634511]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:45:55 pluto kernel: [  226.634517]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:45:55 pluto kernel: [  226.634522]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:45:55 pluto kernel: [  226.634528]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:45:55 pluto kernel: [  226.634533]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:45:55 pluto kernel: [  226.634536] ---[ end trace
f2fbb6fd3e4e0d9d ]---
Dec  6 20:46:30 pluto kernel: [  262.177167] ------------[ cut here
]------------
Dec  6 20:46:30 pluto kernel: [  262.177202] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:46:30 pluto kernel: [  262.177204] Modules linked in:

Dec  6 20:46:30 pluto kernel: [  262.177232] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:46:30 pluto kernel: [  262.177233] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:46:30 pluto kernel: [  262.177235]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:46:30 pluto kernel: [  262.177237]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800b5e4c1a8
Dec  6 20:46:30 pluto kernel: [  262.177240]  ffff8800c02548c0
ffff8800d8ec4800 ffff8800b5e4c0f0 ffff8800da8fc1a0
Dec  6 20:46:30 pluto kernel: [  262.177242] Call Trace:
Dec  6 20:46:30 pluto kernel: [  262.177249]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:46:30 pluto kernel: [  262.177253]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:46:30 pluto kernel: [  262.177255]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:46:30 pluto kernel: [  262.177269]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:46:30 pluto kernel: [  262.177282]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:46:30 pluto kernel: [  262.177294]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:46:30 pluto kernel: [  262.177307]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:46:30 pluto kernel: [  262.177318]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:46:30 pluto kernel: [  262.177322]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:46:30 pluto kernel: [  262.177324]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:46:30 pluto kernel: [  262.177328]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:46:30 pluto kernel: [  262.177330]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:46:30 pluto kernel: [  262.177332] ---[ end trace
f2fbb6fd3e4e0d9e ]---
Dec  6 20:46:35 pluto kernel: [  266.504104] usb 3-1: USB disconnect,
device number 2
Dec  6 20:46:36 pluto kernel: [  267.896063] usb 3-1: new low-speed
USB device number 3 using uhci_hcd
Dec  6 20:46:36 pluto kernel: [  268.073875] usb 3-1: New USB device
found, idVendor=19ff, idProduct=0238
Dec  6 20:46:36 pluto kernel: [  268.073883] usb 3-1: New USB device
strings: Mfr=1, Product=2, SerialNumber=0
Dec  6 20:46:36 pluto kernel: [  268.073888] usb 3-1: Product:
DynexWired USB Optical Mouse
Dec  6 20:46:36 pluto kernel: [  268.073892] usb 3-1: Manufacturer: PixArt
Dec  6 20:46:36 pluto kernel: [  268.093492] input: PixArt DynexWired
USB Optical Mouse as
/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/0003:19FF:0238.0004/input/input16
Dec  6 20:46:36 pluto kernel: [  268.093739] hid-generic
0003:19FF:0238.0004: input,hidraw2: USB HID v1.11 Mouse [PixArt
DynexWired USB Optical Mouse] on usb-0000:00:1d.1-1/input0
Dec  6 20:47:05 pluto kernel: [  296.353457] ------------[ cut here
]------------
Dec  6 20:47:05 pluto kernel: [  296.353492] WARNING: CPU: 0 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:47:05 pluto kernel: [  296.353494] Modules linked in:

Dec  6 20:47:05 pluto kernel: [  296.353522] CPU: 0 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:47:05 pluto kernel: [  296.353524] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:47:05 pluto kernel: [  296.353526]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:47:05 pluto kernel: [  296.353528]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800d9c0c0b8
Dec  6 20:47:05 pluto kernel: [  296.353531]  ffff8801162760a0
ffff8800d8ec4800 ffff8800d9c0c000 ffff8800da8fc1a0
Dec  6 20:47:05 pluto kernel: [  296.353533] Call Trace:
Dec  6 20:47:05 pluto kernel: [  296.353540]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:47:05 pluto kernel: [  296.353544]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:47:05 pluto kernel: [  296.353546]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:47:05 pluto kernel: [  296.353560]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:47:05 pluto kernel: [  296.353573]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:47:05 pluto kernel: [  296.353585]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:47:05 pluto kernel: [  296.353598]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:47:05 pluto kernel: [  296.353609]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:47:05 pluto kernel: [  296.353613]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:47:05 pluto kernel: [  296.353615]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:47:05 pluto kernel: [  296.353619]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:47:05 pluto kernel: [  296.353621]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:47:05 pluto kernel: [  296.353623] ---[ end trace
f2fbb6fd3e4e0d9f ]---
Dec  6 20:47:38 pluto kernel: [  330.118574] ------------[ cut here
]------------
Dec  6 20:47:38 pluto kernel: [  330.118612] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:47:38 pluto kernel: [  330.118614] Modules linked in:

Dec  6 20:47:38 pluto kernel: [  330.118642] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:47:38 pluto kernel: [  330.118643] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:47:38 pluto kernel: [  330.118645]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:47:38 pluto kernel: [  330.118648]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800d9c0c1a8
Dec  6 20:47:38 pluto kernel: [  330.118650]  ffff8800c0254500
ffff8800d8ec4800 ffff8800d9c0c0f0 ffff8800da8fc1a0
Dec  6 20:47:38 pluto kernel: [  330.118653] Call Trace:
Dec  6 20:47:38 pluto kernel: [  330.118659]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:47:38 pluto kernel: [  330.118663]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:47:38 pluto kernel: [  330.118666]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:47:38 pluto kernel: [  330.118680]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:47:38 pluto kernel: [  330.118692]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:47:38 pluto kernel: [  330.118705]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:47:38 pluto kernel: [  330.118717]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:47:38 pluto kernel: [  330.118729]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:47:38 pluto kernel: [  330.118732]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:47:38 pluto kernel: [  330.118735]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:47:38 pluto kernel: [  330.118738]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:47:38 pluto kernel: [  330.118741]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:47:38 pluto kernel: [  330.118742] ---[ end trace
f2fbb6fd3e4e0da0 ]---
Dec  6 20:48:14 pluto kernel: [  365.783231] ------------[ cut here
]------------
Dec  6 20:48:14 pluto kernel: [  365.783274] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:48:14 pluto kernel: [  365.783275] Modules linked in:

Dec  6 20:48:14 pluto kernel: [  365.783303] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:48:14 pluto kernel: [  365.783305] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:48:14 pluto kernel: [  365.783306]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:48:14 pluto kernel: [  365.783309]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800d9c0c1a8
Dec  6 20:48:14 pluto kernel: [  365.783311]  ffff88007eb9cbe0
ffff8800d8ec4800 ffff8800d9c0c0f0 ffff8800da8fc1a0
Dec  6 20:48:14 pluto kernel: [  365.783314] Call Trace:
Dec  6 20:48:14 pluto kernel: [  365.783321]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:48:14 pluto kernel: [  365.783325]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:48:14 pluto kernel: [  365.783327]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:48:14 pluto kernel: [  365.783341]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:48:14 pluto kernel: [  365.783354]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:48:14 pluto kernel: [  365.783366]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:48:14 pluto kernel: [  365.783378]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:48:14 pluto kernel: [  365.783390]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:48:14 pluto kernel: [  365.783393]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:48:14 pluto kernel: [  365.783396]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:48:14 pluto kernel: [  365.783400]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:48:14 pluto kernel: [  365.783402]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:48:14 pluto kernel: [  365.783404] ---[ end trace
f2fbb6fd3e4e0da1 ]---
Dec  6 20:48:30 pluto kernel: [  381.576084] usb 3-1: USB disconnect,
device number 3
Dec  6 20:48:31 pluto kernel: [  383.040035] usb 3-1: new low-speed
USB device number 4 using uhci_hcd
Dec  6 20:48:31 pluto kernel: [  383.217855] usb 3-1: New USB device
found, idVendor=19ff, idProduct=0238
Dec  6 20:48:31 pluto kernel: [  383.217862] usb 3-1: New USB device
strings: Mfr=1, Product=2, SerialNumber=0
Dec  6 20:48:31 pluto kernel: [  383.217867] usb 3-1: Product:
DynexWired USB Optical Mouse
Dec  6 20:48:31 pluto kernel: [  383.217871] usb 3-1: Manufacturer: PixArt
Dec  6 20:48:31 pluto kernel: [  383.237747] input: PixArt DynexWired
USB Optical Mouse as
/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/0003:19FF:0238.0005/input/input17
Dec  6 20:48:31 pluto kernel: [  383.238083] hid-generic
0003:19FF:0238.0005: input,hidraw2: USB HID v1.11 Mouse [PixArt
DynexWired USB Optical Mouse] on usb-0000:00:1d.1-1/input0
Dec  6 20:50:15 pluto kernel: [  486.575362] ------------[ cut here
]------------
Dec  6 20:50:15 pluto kernel: [  486.575413] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:50:15 pluto kernel: [  486.575414] Modules linked in:

Dec  6 20:50:15 pluto kernel: [  486.575475] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:50:15 pluto kernel: [  486.575477] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:50:15 pluto kernel: [  486.575479]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 000000007b607b60
Dec  6 20:50:15 pluto kernel: [  486.575483]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800d9c0c1a8
Dec  6 20:50:15 pluto kernel: [  486.575487]  ffff8800bf8d70a0
ffff8800d8ec4800 ffff8800d9c0c0f0 ffff8800da8fc1a0
Dec  6 20:50:15 pluto kernel: [  486.575490] Call Trace:
Dec  6 20:50:15 pluto kernel: [  486.575493]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:50:15 pluto kernel: [  486.575501]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:50:15 pluto kernel: [  486.575507]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:50:15 pluto kernel: [  486.575512]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:50:15 pluto kernel: [  486.575539]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:50:15 pluto kernel: [  486.575563]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:50:15 pluto kernel: [  486.575588]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:50:15 pluto kernel: [  486.575611]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:50:15 pluto kernel: [  486.575633]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:50:15 pluto kernel: [  486.575638]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:50:15 pluto kernel: [  486.575641]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:50:15 pluto kernel: [  486.575646]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:50:15 pluto kernel: [  486.575650] ---[ end trace
f2fbb6fd3e4e0da2 ]---
Dec  6 20:50:38 pluto kernel: [  509.544080] usb 3-1: USB disconnect,
device number 4
Dec  6 20:50:39 pluto kernel: [  511.000037] usb 3-1: new low-speed
USB device number 5 using uhci_hcd
Dec  6 20:50:39 pluto kernel: [  511.177046] usb 3-1: New USB device
found, idVendor=19ff, idProduct=0238
Dec  6 20:50:39 pluto kernel: [  511.177054] usb 3-1: New USB device
strings: Mfr=1, Product=2, SerialNumber=0
Dec  6 20:50:39 pluto kernel: [  511.177059] usb 3-1: Product:
DynexWired USB Optical Mouse
Dec  6 20:50:39 pluto kernel: [  511.177063] usb 3-1: Manufacturer: PixArt
Dec  6 20:50:39 pluto kernel: [  511.196961] input: PixArt DynexWired
USB Optical Mouse as
/devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/0003:19FF:0238.0006/input/input18
Dec  6 20:50:39 pluto kernel: [  511.197306] hid-generic
0003:19FF:0238.0006: input,hidraw2: USB HID v1.11 Mouse [PixArt
DynexWired USB Optical Mouse] on usb-0000:00:1d.1-1/input0
Dec  6 20:50:50 pluto kernel: [  522.101424] ------------[ cut here
]------------
Dec  6 20:50:50 pluto kernel: [  522.101472] WARNING: CPU: 1 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:50:50 pluto kernel: [  522.101476] Modules linked in:

Dec  6 20:50:50 pluto kernel: [  522.101528] CPU: 1 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:50:50 pluto kernel: [  522.101531] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:50:50 pluto kernel: [  522.101534]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:50:50 pluto kernel: [  522.101539]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800d9c0c0b8
Dec  6 20:50:50 pluto kernel: [  522.101544]  ffff8800d9e93460
ffff8800d8ec4800 ffff8800d9c0c000 ffff8800da8fc1a0
Dec  6 20:50:50 pluto kernel: [  522.101550] Call Trace:
Dec  6 20:50:50 pluto kernel: [  522.101560]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:50:50 pluto kernel: [  522.101567]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:50:50 pluto kernel: [  522.101572]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:50:50 pluto kernel: [  522.101601]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:50:50 pluto kernel: [  522.101627]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:50:50 pluto kernel: [  522.101652]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:50:50 pluto kernel: [  522.101678]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:50:50 pluto kernel: [  522.101702]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:50:50 pluto kernel: [  522.101708]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:50:50 pluto kernel: [  522.101713]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:50:50 pluto kernel: [  522.101720]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:50:50 pluto kernel: [  522.101724]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:50:50 pluto kernel: [  522.101728] ---[ end trace
f2fbb6fd3e4e0da3 ]---
Dec  6 20:52:11 pluto kernel: [  602.588612] ------------[ cut here
]------------
Dec  6 20:52:11 pluto kernel: [  602.588659] WARNING: CPU: 0 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:52:11 pluto kernel: [  602.588662] Modules linked in:

Dec  6 20:52:11 pluto kernel: [  602.588714] CPU: 0 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:52:11 pluto kernel: [  602.588717] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:52:11 pluto kernel: [  602.588720]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:52:11 pluto kernel: [  602.588726]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800d9c0c298
Dec  6 20:52:11 pluto kernel: [  602.588731]  ffff8800835f1500
ffff8800d8ec4800 ffff8800d9c0c1e0 ffff8800da8fc1a0
Dec  6 20:52:11 pluto kernel: [  602.588736] Call Trace:
Dec  6 20:52:11 pluto kernel: [  602.588746]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:52:11 pluto kernel: [  602.588753]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:52:11 pluto kernel: [  602.588758]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:52:11 pluto kernel: [  602.588787]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:52:11 pluto kernel: [  602.588813]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:52:11 pluto kernel: [  602.588838]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:52:11 pluto kernel: [  602.588864]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:52:11 pluto kernel: [  602.588888]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:52:11 pluto kernel: [  602.588894]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:52:11 pluto kernel: [  602.588899]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:52:11 pluto kernel: [  602.588906]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:52:11 pluto kernel: [  602.588910]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:52:11 pluto kernel: [  602.588914] ---[ end trace
f2fbb6fd3e4e0da4 ]---
Dec  6 20:52:42 pluto kernel: [  633.775152] ------------[ cut here
]------------
Dec  6 20:52:42 pluto kernel: [  633.775193] WARNING: CPU: 0 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:52:42 pluto kernel: [  633.775194] Modules linked in:

Dec  6 20:52:42 pluto kernel: [  633.775222] CPU: 0 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:52:42 pluto kernel: [  633.775224] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:52:42 pluto kernel: [  633.775226]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:52:42 pluto kernel: [  633.775229]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800b5e4c1a8
Dec  6 20:52:42 pluto kernel: [  633.775231]  ffff88007eb9ce60
ffff8800d8ec4800 ffff8800b5e4c0f0 ffff8800da8fc1a0
Dec  6 20:52:42 pluto kernel: [  633.775234] Call Trace:
Dec  6 20:52:42 pluto kernel: [  633.775241]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:52:42 pluto kernel: [  633.775245]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:52:42 pluto kernel: [  633.775247]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:52:42 pluto kernel: [  633.775261]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:52:42 pluto kernel: [  633.775274]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:52:42 pluto kernel: [  633.775286]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:52:42 pluto kernel: [  633.775298]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:52:42 pluto kernel: [  633.775310]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:52:42 pluto kernel: [  633.775313]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:52:42 pluto kernel: [  633.775316]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:52:42 pluto kernel: [  633.775319]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:52:42 pluto kernel: [  633.775322]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:52:42 pluto kernel: [  633.775323] ---[ end trace
f2fbb6fd3e4e0da5 ]---
Dec  6 20:53:18 pluto kernel: [  670.246781] ------------[ cut here
]------------
Dec  6 20:53:18 pluto kernel: [  670.246824] WARNING: CPU: 0 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:53:18 pluto kernel: [  670.246826] Modules linked in:

Dec  6 20:53:18 pluto kernel: [  670.246855] CPU: 0 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:53:18 pluto kernel: [  670.246856] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:53:18 pluto kernel: [  670.246858]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:53:18 pluto kernel: [  670.246861]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800b5e4c298
Dec  6 20:53:18 pluto kernel: [  670.246863]  ffff8800bf8d7e60
ffff8800d8ec4800 ffff8800b5e4c1e0 ffff8800da8fc1a0
Dec  6 20:53:18 pluto kernel: [  670.246866] Call Trace:
Dec  6 20:53:18 pluto kernel: [  670.246873]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:53:18 pluto kernel: [  670.246877]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:53:18 pluto kernel: [  670.246880]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:53:18 pluto kernel: [  670.246894]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:53:18 pluto kernel: [  670.246906]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:53:18 pluto kernel: [  670.246918]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:53:18 pluto kernel: [  670.246930]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:53:18 pluto kernel: [  670.246942]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:53:18 pluto kernel: [  670.246945]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:53:18 pluto kernel: [  670.246948]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:53:18 pluto kernel: [  670.246952]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:53:18 pluto kernel: [  670.246954]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:53:18 pluto kernel: [  670.246956] ---[ end trace
f2fbb6fd3e4e0da6 ]---
Dec  6 20:53:51 pluto kernel: [  702.280760] ------------[ cut here
]------------
Dec  6 20:53:51 pluto kernel: [  702.280808] WARNING: CPU: 0 PID: 664
at fs/btrfs/delayed-inode.c:1410
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]()
Dec  6 20:53:51 pluto kernel: [  702.280811] Modules linked in:

Dec  6 20:53:51 pluto kernel: [  702.280863] CPU: 0 PID: 664 Comm:
btrfs-transacti Tainted: G        W   E  3.18.0-rc7-ajw #78
Dec  6 20:53:51 pluto kernel: [  702.280866] Hardware name: System
manufacturer System Product Name/P5KPL-CM, BIOS 0512    05/19/2008
Dec  6 20:53:51 pluto kernel: [  702.280869]  0000000000000009
ffff8800d877fd78 ffffffff81764c2c 0000000000000000
Dec  6 20:53:51 pluto kernel: [  702.280874]  0000000000000000
ffff8800d877fdb8 ffffffff8106f0b1 ffff8800b5e4c388
Dec  6 20:53:51 pluto kernel: [  702.280879]  ffff880116276c80
ffff8800d8ec4800 ffff8800b5e4c2d0 ffff8800da8fc1a0
Dec  6 20:53:51 pluto kernel: [  702.280885] Call Trace:
Dec  6 20:53:51 pluto kernel: [  702.280895]  [<ffffffff81764c2c>]
dump_stack+0x46/0x58
Dec  6 20:53:51 pluto kernel: [  702.280902]  [<ffffffff8106f0b1>]
warn_slowpath_common+0x81/0xa0
Dec  6 20:53:51 pluto kernel: [  702.280907]  [<ffffffff8106f18a>]
warn_slowpath_null+0x1a/0x20
Dec  6 20:53:51 pluto kernel: [  702.280936]  [<ffffffffa02889d4>]
btrfs_assert_delayed_root_empty+0x34/0x40 [btrfs]
Dec  6 20:53:51 pluto kernel: [  702.280962]  [<ffffffffa0233584>]
btrfs_commit_transaction+0x3b4/0xa90 [btrfs]
Dec  6 20:53:51 pluto kernel: [  702.280987]  [<ffffffffa0233cf3>] ?
start_transaction+0x93/0x590 [btrfs]
Dec  6 20:53:51 pluto kernel: [  702.281013]  [<ffffffffa022f0b5>]
transaction_kthread+0x1b5/0x240 [btrfs]
Dec  6 20:53:51 pluto kernel: [  702.281037]  [<ffffffffa022ef00>] ?
btrfs_cleanup_transaction+0x560/0x560 [btrfs]
Dec  6 20:53:51 pluto kernel: [  702.281043]  [<ffffffff8108d6b2>]
kthread+0xd2/0xf0
Dec  6 20:53:51 pluto kernel: [  702.281048]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:53:51 pluto kernel: [  702.281055]  [<ffffffff8176cfbc>]
ret_from_fork+0x7c/0xb0
Dec  6 20:53:51 pluto kernel: [  702.281059]  [<ffffffff8108d5e0>] ?
kthread_create_on_node+0x180/0x180
Dec  6 20:53:51 pluto kernel: [  702.281063] ---[ end trace

f2fbb6fd3e4e0da7 ]---

Chris Murphy

2014-12-07 19:20 UTC #2 lore raw

Quoted 8 lines · Andrew Wade

I've had repeated lockups as well; I can trigger them by attempting to copy files off of a damaged DVD.
I saw the btrfs_assert_delayed_root_empty warning as well, but not during the lockup; instead I saw it on a boot after a lockup.
During the lockup I sometimes get a different message:

Quoted 8 lines

Dec  6 19:41:11 pluto kernel: [347280.104032] INFO: task init:1228
blocked for more than 120 seconds.
Dec  6 19:41:11 pluto kernel: [347280.104038]       Tainted: G
   E  3.18.0-rc7-ajw #78
Dec  6 19:41:11 pluto kernel: [347280.104039] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec  6 19:41:11 pluto kernel: [347280.104041] init            D

ffff88011fc13640 0 1228 1215 0x00000000

Typically a dev will want to see the result of sysrq+w to show details on the blocked tasks. I suggest reproducing the conditions, then issue sysrq+w, then recapture dmesg. And also you might look at your own previous post in the archives and see if it formats legibly because the result I've got in gmail (above) is wrapping poorly and makes it hard to read. If you can't figure that out, then it's easier to just file a bug at bugzilla.kernel.org, and attach the dmesg output as a text file, then cite the bug URL in this thread.

https://www.kernel.org/doc/Documentation/sysrq.txt

Signature · 1 line

Chris Murphy

Andrew Wade

2014-12-10 00:06 UTC #3 lore raw

Quoted 12 lines · Chris Murphy

Quoted 1 line · Andrew Wade
...
Typically a dev will want to see the result of sysrq+w to show details on the blocked tasks. I suggest reproducing the conditions, then issue sysrq+w, then recapture dmesg. And also you might look at your own previous post in the archives and see if it formats legibly because the result I've got in gmail (above) is wrapping poorly and makes it hard to read. If you can't figure that out, then it's easier to just file a bug at bugzilla.kernel.org, and attach the dmesg output as a text file, then cite the bug URL in this thread.

Quoted 2 lines

https://www.kernel.org/doc/Documentation/sysrq.txt

Thanks Chris.

I found an exiting bug for my issue and attached a log with sysrq+w

https://bugzilla.kernel.org/show_bug.cgi?id=82251

thanks,
Andrew